Fix engine sounds' dampening to a sane value, now that the bug preventing it from working properly was fixed.

You can hear engines in 16P again, but it's not as obnoxiously loud as it was before. Additionally, I commented this function better.

Disable Discord Rich Presence on dedicated servers

See merge request KartKrew/Kart-Public!229

Move master server presence updates to Advertise_OnChange

See merge request KartKrew/Kart-Public!227

Make "divide by zero" or "modulo by zero" errors show the file and line of where it happened

See merge request KartKrew/Kart-Public!228

Shouldn't break scripts as it stops execution as soon it happens, like it already does.

This will probably call DRPC_UpdatePresence slightly less?

Rename the "small" variable to "isSmall"

See merge request KartKrew/Kart-Public!226

Reported by MK, apparently "small" is considered a data type for some systems. After a little bit of research, apparently it can happen when including <windows.h>... whatever, just rename the variable :p

(cherry picked from commit 6f51c68c7248d616ad16f66b72cfcc36b7c952f5)

This should work for mingw and linux so far.

(cherry picked from commit f92026f98b168f4556d50d3dde403ab6bfd97ff3)

(cherry picked from commit 9495e6354fed1028c6fc502cc9d946cfdd0b7896)

(cherry picked from commit ef2bff6383b16385f9874e1c9c6b66c9df794f5b)

(cherry picked from commit 4059c6a654a5785199cf0d6dd998bf113b57cd0f)

(cherry picked from commit 00943e9e82ff46a97a2bc1e3179ce47e53345cc3)

(cherry picked from commit 4e1d54c3322c17276e532ab4d9e875a8c8ebc399)

(cherry picked from commit 193c45aa2f555b56f548f70e7fa0d74a1ce4e412)

(cherry picked from commit 489bb81d0065299ffea09b20cfa06dbbedcf247a)

If the version is not supported by the Makefile, the flag for the latest
version supported is set instead.

(cherry picked from commit bf90fbb91f28af30ff79523681e7f73e60121535)

Master Server 2

See merge request KartKrew/Kart-Public!224

Battle item balance

See merge request KartKrew/Kart-Public!222

Apply volume to sounds that have an origin

See merge request KartKrew/Kart-Public!223

Don't let players change their name more than five times per minute

See merge request KartKrew/Kart-Public!221

Save renderer to file

See merge request KartKrew/Kart-Public!220

Removes rooms, replaced with cv_advertise and "Advertise" on the host menu.

According to the new API, SRB2APPLICATION is sent instead of MODID. A contact
field was added, but there is no means of accessing it or setting it.

As a slight change, the server list will be populated even on an outdated
version of the game. (The new API was designed with this in mind.) The update
alert is still presented first of course.

Previously sounds with an origin would always start at max volume. This is
because the distance calculation adjusts the volume, and that volume needs to
be updated every tic as distance changes. Storing the original volume works.

SetCurrentDirectory to where the exe lives

See merge request KartKrew/Kart-Public!219